INDUSTRY COMPONENT

Lead Wires / Cable

Lead wires and cables for temperature sensors transmit electrical signals from sensing elements to control systems.

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Component Specifications

Definition
Lead wires and cables are essential components in temperature sensor assemblies that provide electrical connectivity between the temperature sensing element (such as RTD, thermocouple, or thermistor) and the measurement or control instrumentation. These components must maintain signal integrity while withstanding the environmental conditions of the application, including temperature extremes, chemical exposure, mechanical stress, and electromagnetic interference.
Working Principle
Lead wires and cables function as conductive pathways that carry low-voltage electrical signals generated by temperature sensing elements. They maintain signal accuracy by minimizing resistance, preventing signal degradation from noise or interference, and ensuring stable electrical characteristics across the operating temperature range. Proper insulation and shielding protect against environmental factors that could compromise measurement precision.
Materials
Conductor: Tinned copper, nickel-plated copper, or alloy wires (e.g., Constantan, Chromel, Alumel for thermocouples). Insulation: PTFE (Teflon), FEP, PFA, silicone rubber, fiberglass, or ceramic beads for high-temperature applications. Sheath/Jacket: Stainless steel braiding, PVC, polyurethane, or thermoplastic elastomers. Shielding: Copper or aluminum foil with drain wire, or braided shielding for EMI/RFI protection.
Technical Parameters
  • Bend Radius 5x cable diameter minimum
  • Conductor Size AWG 20 to 30
  • Voltage Rating 300V to 600V
  • Temperature Range -200°C to +1000°C
  • Insulation Resistance >100 MΩ at 500V DC
Standards
ISO 80601-2-56, DIN 43735, IEC 60584

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lead Wires / Cable.

temperature sensor cables thermocouple wires RTD lead wires industrial sensor cables high-temperature cables shielded sensor wires Lead Wires / Cable Lead Wires / Cable in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Temperature Sensors

Devices that measure and monitor temperature within the Sterilization Zone to ensure precise thermal control during sterilization processes.

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Engineering Analysis

Risks & Mitigation
  • Signal degradation from poor connections
  • Insulation breakdown at high temperatures
  • EMI/RFI interference affecting accuracy
  • Mechanical damage from vibration or abrasion
FMEA Triads
Trigger: Incorrect wire type for thermocouple application
Failure: Measurement errors due to incorrect thermoelectric voltage
Mitigation: Use matched extension wires or compensating cables specified for the thermocouple type (e.g., Type K, J, T)
Trigger: Inadequate shielding in electrically noisy environments
Failure: Signal noise and inaccurate temperature readings
Mitigation: Implement double shielding (foil + braid) and proper grounding techniques

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±1.5°C or ±0.4% of reading (whichever is greater) for standard industrial applications
Test Method
ASTM E230/E230M for thermoelectric properties, IEC 60068 for environmental testing, UL 758 for appliance wiring material

Buyer Feedback

★★★★☆ 4.6 / 5.0 (25 reviews)

"The Lead Wires / Cable we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."

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"The technical documentation for this Lead Wires / Cable is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

What is the difference between thermocouple extension wire and compensating cable?

Thermocouple extension wire matches the thermocouple alloy composition and is used to extend the sensor to the instrument over longer distances while maintaining accuracy. Compensating cable uses different, less expensive alloys that mimic the thermoelectric properties of the thermocouple within a limited temperature range, typically for connections near ambient conditions.

How do I select the right insulation material for high-temperature applications?

For temperatures above 200°C, use PTFE, FEP, or ceramic insulation. PTFE handles up to 260°C continuously, while ceramic-insulated wires can withstand over 1000°C. Consider chemical resistance, flexibility, and abrasion resistance alongside temperature rating.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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